Biological screening of 100 plant extracts for cosmetic use (II): anti‐oxidative activity and free radical scavenging activity

Abstract

Methanol aqueous extracts of 100 plants were screened for anti-oxidative activity using Fenton's reagent/ethyl linoleate system and for free radical scavenging activity using the 1,1-diphenyl-2-picryl hydrazyl free radical generating system. The results suggest that 14 plants - Alpinia officinarum, Areca catechu, Brassica alba, Cannabis sativa, Curcuma longa, Curcuma aromatica, Eugenia caryophyllata, Evodia officinalis, Paeonia suffruticosa, Rhaphanus sativus, Rheum palmatum, Rhus verniciflua, Trapa bispinosa, Zanthoxylum piperitum - may be potential sources of anti-oxidants. Eight plants - Citrus aurantium, Cornus officinalis, Gleditsia japonica, Lindera strychnifolia, Phragmites communis, Prunus mume, Schizandra chinensis, Terminalia chebula - may be the potential source of free radical scavengers from natural plant.

Antioxidant activity of water and alcohol extracts of chamomile flowers, anise seeds and dill seeds

“…14 Table 2 shows the amounts of total phenolic compounds in the water and alcohol extracts. The water and alcohol extracts of chamomile flowers had the highest contents of total phenols.…”

“…These antioxidants occur in all higher plants and in all parts of the plant (wood, bark, stems, pods, leaves, fruits, roots, flowers and seeds). 14 It is now well known that the antioxidant activity of these plants is mainly due to the presence of phenolic compounds. 15 -17 Chamomile (Matricaria aurea Schultz) flowers and anise (Pimpinella anisum L) seeds are widely used in many countries of the world as well as in the Middle East to prepare herbal teas.…”

Antioxidant, anti-proliferative and cyclooxygenase-2 inhibitory activities of ethanolic extracts from lemon balm (Melissa officinalis L.) leaves

“…UV or heat exposure), and induce molecular transformation, cell membrane damage, gene mutation and several adverse cellular responds. Phenols, the natural antioxidants, widely existing in all parts of higher plants (bark, flowers, fruits, leaves, pods, seeds, stems and wood) showed good ROS scavenging capacity (Kim, Kim, Kim, & Heo, 1997). Ingestion of the natural antioxidants may lower the risk of cardiovascular disease, cancer, inflammation and so on (Arts & Hollman, 2005).…”

Olive by-products: Challenge application in cosmetic industry

“…Olive cake is rich in water (70-80% of water), contains 2-3% of residual olive oil and many phytochemicals (natural antioxidants, including tocopherols, flavonoids, quercetin, cinnamic acid, peptides and phenolic compounds) (Aziz et al, 1998;Kim et al, 1997;Masghouni and Hassairi, 2000). Table 1 summarizes the different bioactive compounds found in olive by-products and Fig.…”